Astronomers with European Southern Observatory have found a new Blackhole that is thought to be the closest to the Earth at a distance of 1000 lightyears. The new found Blackhole is part of a triple system called________?

Question

Accepted Answer

HR-6819. B is correct because HR-6819 is the known triple system associated with this newly found black hole. A is incorrect because it refers to a different designation. C is incorrect because the naming convention for such systems usually follows the pattern of the other options. D is incorrect because it uses an incorrect combination of letters and numbers.